US3753403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static discharge for electro-explosive devices
Assignee: United States Department of the Navy
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Filing: 1968-09-19
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Granted: 1973-08-21
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Expires: 1988-09-19
Abstract
Abstract A static discharge device for an electro-explosive having a pair of electrical lead wires with a bridge element connected there across and in contact with an explosive charge. The bridge element has saw tooth edges positioned away from the explosive charge to provide multiple selective static breakdown points.
Inventors
- 👤 V Menichelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:05
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
57 words
An electroresponsive bridge element for an explosive device comprising a pair of flat electrical resistance sections each in the shape of a chordal segment of a circle bounded by a straight edge and a curved edge, a plurality of static discharge protuberences extending from said curved edges, and a serpentine connecting element extending between said straight edges.
Claim 2
Dependent Claim
57 words
An electroresponsive bridge element for an explosive device comprising a pair of flat electrical resistance sections each in the shape of a chordal segment of a circle bounded by a straight edge and a curved edge, a plurality of static discharge protuberences extending from said curved edges, and a serpentine connecting element extending between said straight edges.
Claim 3
Dependent Claim
57 words
An electroresponsive bridge element for an explosive device comprising a pair of flat resistance sections each in the shape of a chordal segment of a circle bounded by a straight edge and a curved edge, a serpentine connection element extending between said straight edges, and means formed continuously along said curved edges for concentrating static electric charges.
Claim 4
Dependent Claim
57 words
An electroresponsive bridge element for an explosive device comprising a pair of flat resistance sections each in the shape of a chordal segment of a circle bounded by a straight edge and a curved edge, a serpentine connection element extending between said straight edges, and means formed continuously along said curved edges for concentrating static electric charges.
Claim 5
Dependent Claim
105 words
An electro-explosive device comprising: a metallic casing; an explosive charge disposed within said casing; a pair of electrical lead wires extending within said casing; means for providing electrical insulation between said lead wires and said casing; an electroresponsive bridge element comprising: A pair of sections, each in the shape of a chordal segment of a circle, electrically connected with one of said lead wires, and having a plurality of static discharge protuberances about the periphery thereof adjacent said casing and electrically insulated from said explosive charge; and a serpentine element extending between and connected to said sections and in heat transfer relationship with said charge.
Claim 6
Dependent Claim
105 words
An electro-explosive device comprising: a metallic casing; an explosive charge disposed within said casing; a pair of electrical lead wires extending within said casing; means for providing electrical insulation between said lead wires and said casing; an electroresponsive bridge element comprising: A pair of sections, each in the shape of a chordal segment of a circle, electrically connected with one of said lead wires, and having a plurality of static discharge protuberances about the periphery thereof adjacent said casing and electrically insulated from said explosive charge; and a serpentine element extending between and connected to said sections and in heat transfer relationship with said charge.
References Cited (Backward Citations)
CA581316A
Cited
US3306202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |